A. thaliana Hybrids Develop Growth Abnormalities through Integration of Stress, Hormone and Growth Signaling

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http://hdl.handle.net/10138/346676

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Sageman-Furnas , K , Nurmi , M , Contag , M , Ploetner , B , Alseekh , S , Wiszniewski , A , Fernie , A R , Smith , L M & Laitinen , R A E 2022 , ' A. thaliana Hybrids Develop Growth Abnormalities through Integration of Stress, Hormone and Growth Signaling ' , Plant and Cell Physiology , vol. 63 , no. 7 , pp. 944-954 . https://doi.org/10.1093/pcp/pcac056

Title: A. thaliana Hybrids Develop Growth Abnormalities through Integration of Stress, Hormone and Growth Signaling
Author: Sageman-Furnas, Katelyn; Nurmi, Markus; Contag, Meike; Ploetner, Bjoern; Alseekh, Saleh; Wiszniewski, Andrew; Fernie, Alisdair R.; Smith, Lisa M.; Laitinen, Roosa A. E.
Contributor organization: University of Helsinki
Organismal and Evolutionary Biology Research Programme
Biosciences
Date: 2022-07-14
Language: eng
Number of pages: 11
Belongs to series: Plant and Cell Physiology
ISSN: 0032-0781
DOI: https://doi.org/10.1093/pcp/pcac056
URI: http://hdl.handle.net/10138/346676
Abstract: Hybrids between Arabidopsis thaliana accessions are important in revealing the consequences of epistatic interactions in plants. F-1 hybrids between the A. thaliana accessions displaying either defense or developmental phenotypes have been revealing the roles of the underlying epistatic genes. The interaction of two naturally occurring alleles of the OUTGROWTH-ASSOCIATED KINASE (OAK) gene in Sha and Lag2-2, previously shown to cause a similar phenotype in a different allelic combination in A. thaliana, was required for the hybrid phenotype. Outgrowth formation in the hybrids was associated with reduced levels of salicylic acid, jasmonic acid and abscisic acid in petioles and the application of these hormones mitigated the formation of the outgrowths. Moreover, different abiotic stresses were found to mitigate the outgrowth phenotype. The involvement of stress and hormone signaling in outgrowth formation was supported by a global transcriptome analysis, which additionally revealed that TCP1, a transcription factor known to regulate leaf growth and symmetry, was downregulated in the outgrowth tissue. These results demonstrate that a combination of natural alleles of OAK regulates growth and development through the integration of hormone and stress signals and highlight the importance of natural variation as a resource to discover the function of gene variants that are not present in the most studied accessions of A. thaliana.
Subject: Arabidopsis thaliana
Epistasis
Hybrid incompatibility
Natural variation
OAK
Receptor-like kinase
FERONIA RECEPTOR KINASE
CELL-WALL INTEGRITY
SALT STRESS
ARABIDOPSIS
EXPRESSION
RESPONSES
TOLERANCE
EVOLUTION
AUXIN
TCP1
11831 Plant biology
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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